<?php

define('SERVICES_JSON_SLICE',1);
define('SERVICES_JSON_IN_STR',2);
define('SERVICES_JSON_IN_ARR',3);
define('SERVICES_JSON_IN_OBJ',4);
define('SERVICES_JSON_IN_CMT',5);
define('SERVICES_JSON_LOOSE_TYPE',16);
define('SERVICES_JSON_SUPPRESS_ERRORS',32);
class Services_JSON
{
function Services_JSON($use = 0)
{
$this->use = $use;
}
function utf162utf8($utf16)
{
if(function_exists('mb_convert_encoding')) {
return mb_convert_encoding($utf16,'UTF-8','UTF-16');
}
$bytes = (ord($utf16{0}) <<8) |ord($utf16{1});
switch(true) {
case ((0x7F &$bytes) == $bytes):
return chr(0x7F &$bytes);
case (0x07FF &$bytes) == $bytes:
return chr(0xC0 |(($bytes >>6) &0x1F))
.chr(0x80 |($bytes &0x3F));
case (0xFFFF &$bytes) == $bytes:
return chr(0xE0 |(($bytes >>12) &0x0F))
.chr(0x80 |(($bytes >>6) &0x3F))
.chr(0x80 |($bytes &0x3F));
}
return '';
}
function utf82utf16($utf8)
{
if(function_exists('mb_convert_encoding')) {
return mb_convert_encoding($utf8,'UTF-16','UTF-8');
}
switch(strlen($utf8)) {
case 1:
return $utf8;
case 2:
return chr(0x07 &(ord($utf8{0}) >>2))
.chr((0xC0 &(ord($utf8{0}) <<6))
|(0x3F &ord($utf8{1})));
case 3:
return chr((0xF0 &(ord($utf8{0}) <<4))
|(0x0F &(ord($utf8{1}) >>2)))
.chr((0xC0 &(ord($utf8{1}) <<6))
|(0x7F &ord($utf8{2})));
}
return '';
}
function encode($var)
{
switch (gettype($var)) {
case 'boolean':
return $var ?'true': 'false';
case 'NULL':
return 'null';
case 'integer':
return (int) $var;
case 'double':
case 'float':
return (float) $var;
case 'string':
$ascii = '';
$strlen_var = strlen($var);
for ($c = 0;$c <$strlen_var;++$c) {
$ord_var_c = ord($var{$c});
switch (true) {
case $ord_var_c == 0x08:
$ascii .= '\b';
break;
case $ord_var_c == 0x09:
$ascii .= '\t';
break;
case $ord_var_c == 0x0A:
$ascii .= '\n';
break;
case $ord_var_c == 0x0C:
$ascii .= '\f';
break;
case $ord_var_c == 0x0D:
$ascii .= '\r';
break;
case $ord_var_c == 0x22:
case $ord_var_c == 0x2F:
case $ord_var_c == 0x5C:
$ascii .= '\\'.$var{$c};
break;
case (($ord_var_c >= 0x20) &&($ord_var_c <= 0x7F)):
$ascii .= $var{$c};
break;
case (($ord_var_c &0xE0) == 0xC0):
$char = pack('C*',$ord_var_c,ord($var{$c +1}));
$c += 1;
$utf16 = $this->utf82utf16($char);
$ascii .= sprintf('\u%04s',bin2hex($utf16));
break;
case (($ord_var_c &0xF0) == 0xE0):
$char = pack('C*',$ord_var_c,
ord($var{$c +1}),
ord($var{$c +2}));
$c += 2;
$utf16 = $this->utf82utf16($char);
$ascii .= sprintf('\u%04s',bin2hex($utf16));
break;
case (($ord_var_c &0xF8) == 0xF0):
$char = pack('C*',$ord_var_c,
ord($var{$c +1}),
ord($var{$c +2}),
ord($var{$c +3}));
$c += 3;
$utf16 = $this->utf82utf16($char);
$ascii .= sprintf('\u%04s',bin2hex($utf16));
break;
case (($ord_var_c &0xFC) == 0xF8):
$char = pack('C*',$ord_var_c,
ord($var{$c +1}),
ord($var{$c +2}),
ord($var{$c +3}),
ord($var{$c +4}));
$c += 4;
$utf16 = $this->utf82utf16($char);
$ascii .= sprintf('\u%04s',bin2hex($utf16));
break;
case (($ord_var_c &0xFE) == 0xFC):
$char = pack('C*',$ord_var_c,
ord($var{$c +1}),
ord($var{$c +2}),
ord($var{$c +3}),
ord($var{$c +4}),
ord($var{$c +5}));
$c += 5;
$utf16 = $this->utf82utf16($char);
$ascii .= sprintf('\u%04s',bin2hex($utf16));
break;
}
}
return '"'.$ascii.'"';
case 'array':
if (is_array($var) &&count($var) &&(array_keys($var) !== range(0,sizeof($var) -1))) {
$properties = array_map(array($this,'name_value'),
array_keys($var),
array_values($var));
foreach($properties as $property) {
if(Services_JSON::isError($property)) {
return $property;
}
}
return '{'.join(',',$properties) .'}';
}
$elements = array_map(array($this,'encode'),$var);
foreach($elements as $element) {
if(Services_JSON::isError($element)) {
return $element;
}
}
return '['.join(',',$elements) .']';
case 'object':
$vars = get_object_vars($var);
$properties = array_map(array($this,'name_value'),
array_keys($vars),
array_values($vars));
foreach($properties as $property) {
if(Services_JSON::isError($property)) {
return $property;
}
}
return '{'.join(',',$properties) .'}';
default:
return ($this->use &SERVICES_JSON_SUPPRESS_ERRORS)
?'null'
: new Services_JSON_Error(gettype($var)." can not be encoded as JSON string");
}
}
function name_value($name,$value)
{
$encoded_value = $this->encode($value);
if(Services_JSON::isError($encoded_value)) {
return $encoded_value;
}
return $this->encode(strval($name)) .':'.$encoded_value;
}
function reduce_string($str)
{
$str = preg_replace(array(
'#^\s*//(.+)$#m',
'#^\s*/\*(.+)\*/#Us',
'#/\*(.+)\*/\s*$#Us'
),'',$str);
return trim($str);
}
function decode($str)
{
$str = $this->reduce_string($str);
switch (strtolower($str)) {
case 'true':
return true;
case 'false':
return false;
case 'null':
return null;
default:
$m = array();
if (is_numeric($str)) {
return ((float)$str == (integer)$str)
?(integer)$str
: (float)$str;
}elseif (preg_match('/^("|\').*(\1)$/s',$str,$m) &&$m[1] == $m[2]) {
$delim = substr($str,0,1);
$chrs = substr($str,1,-1);
$utf8 = '';
$strlen_chrs = strlen($chrs);
for ($c = 0;$c <$strlen_chrs;++$c) {
$substr_chrs_c_2 = substr($chrs,$c,2);
$ord_chrs_c = ord($chrs{$c});
switch (true) {
case $substr_chrs_c_2 == '\b':
$utf8 .= chr(0x08);
++$c;
break;
case $substr_chrs_c_2 == '\t':
$utf8 .= chr(0x09);
++$c;
break;
case $substr_chrs_c_2 == '\n':
$utf8 .= chr(0x0A);
++$c;
break;
case $substr_chrs_c_2 == '\f':
$utf8 .= chr(0x0C);
++$c;
break;
case $substr_chrs_c_2 == '\r':
$utf8 .= chr(0x0D);
++$c;
break;
case $substr_chrs_c_2 == '\\"':
case $substr_chrs_c_2 == '\\\'':
case $substr_chrs_c_2 == '\\\\':
case $substr_chrs_c_2 == '\\/':
if (($delim == '"'&&$substr_chrs_c_2 != '\\\'') ||
($delim == "'"&&$substr_chrs_c_2 != '\\"')) {
$utf8 .= $chrs{++$c};
}
break;
case preg_match('/\\\u[0-9A-F]{4}/i',substr($chrs,$c,6)):
$utf16 = chr(hexdec(substr($chrs,($c +2),2)))
.chr(hexdec(substr($chrs,($c +4),2)));
$utf8 .= $this->utf162utf8($utf16);
$c += 5;
break;
case ($ord_chrs_c >= 0x20) &&($ord_chrs_c <= 0x7F):
$utf8 .= $chrs{$c};
break;
case ($ord_chrs_c &0xE0) == 0xC0:
$utf8 .= substr($chrs,$c,2);
++$c;
break;
case ($ord_chrs_c &0xF0) == 0xE0:
$utf8 .= substr($chrs,$c,3);
$c += 2;
break;
case ($ord_chrs_c &0xF8) == 0xF0:
$utf8 .= substr($chrs,$c,4);
$c += 3;
break;
case ($ord_chrs_c &0xFC) == 0xF8:
$utf8 .= substr($chrs,$c,5);
$c += 4;
break;
case ($ord_chrs_c &0xFE) == 0xFC:
$utf8 .= substr($chrs,$c,6);
$c += 5;
break;
}
}
return $utf8;
}elseif (preg_match('/^\[.*\]$/s',$str) ||preg_match('/^\{.*\}$/s',$str)) {
if ($str{0}== '[') {
$stk = array(SERVICES_JSON_IN_ARR);
$arr = array();
}else {
if ($this->use &SERVICES_JSON_LOOSE_TYPE) {
$stk = array(SERVICES_JSON_IN_OBJ);
$obj = array();
}else {
$stk = array(SERVICES_JSON_IN_OBJ);
$obj = new stdClass();
}
}
array_push($stk,array('what'=>SERVICES_JSON_SLICE,
'where'=>0,
'delim'=>false));
$chrs = substr($str,1,-1);
$chrs = $this->reduce_string($chrs);
if ($chrs == '') {
if (reset($stk) == SERVICES_JSON_IN_ARR) {
return $arr;
}else {
return $obj;
}
}
$strlen_chrs = strlen($chrs);
for ($c = 0;$c <= $strlen_chrs;++$c) {
$top = end($stk);
$substr_chrs_c_2 = substr($chrs,$c,2);
if (($c == $strlen_chrs) ||(($chrs{$c}== ',') &&($top['what'] == SERVICES_JSON_SLICE))) {
$slice = substr($chrs,$top['where'],($c -$top['where']));
array_push($stk,array('what'=>SERVICES_JSON_SLICE,'where'=>($c +1),'delim'=>false));
if (reset($stk) == SERVICES_JSON_IN_ARR) {
array_push($arr,$this->decode($slice));
}elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
$parts = array();
if (preg_match('/^\s*(["\'].*[^\\\]["\'])\s*:\s*(\S.*),?$/Uis',$slice,$parts)) {
$key = $this->decode($parts[1]);
$val = $this->decode($parts[2]);
if ($this->use &SERVICES_JSON_LOOSE_TYPE) {
$obj[$key] = $val;
}else {
$obj->$key = $val;
}
}elseif (preg_match('/^\s*(\w+)\s*:\s*(\S.*),?$/Uis',$slice,$parts)) {
$key = $parts[1];
$val = $this->decode($parts[2]);
if ($this->use &SERVICES_JSON_LOOSE_TYPE) {
$obj[$key] = $val;
}else {
$obj->$key = $val;
}
}
}
}elseif ((($chrs{$c}== '"') ||($chrs{$c}== "'")) &&($top['what'] != SERVICES_JSON_IN_STR)) {
array_push($stk,array('what'=>SERVICES_JSON_IN_STR,'where'=>$c,'delim'=>$chrs{$c}));
}elseif (($chrs{$c}== $top['delim']) &&
($top['what'] == SERVICES_JSON_IN_STR) &&
((strlen(substr($chrs,0,$c)) -strlen(rtrim(substr($chrs,0,$c),'\\'))) %2 != 1)) {
array_pop($stk);
}elseif (($chrs{$c}== '[') &&
in_array($top['what'],array(SERVICES_JSON_SLICE,SERVICES_JSON_IN_ARR,SERVICES_JSON_IN_OBJ))) {
array_push($stk,array('what'=>SERVICES_JSON_IN_ARR,'where'=>$c,'delim'=>false));
}elseif (($chrs{$c}== ']') &&($top['what'] == SERVICES_JSON_IN_ARR)) {
array_pop($stk);
}elseif (($chrs{$c}== '{') &&
in_array($top['what'],array(SERVICES_JSON_SLICE,SERVICES_JSON_IN_ARR,SERVICES_JSON_IN_OBJ))) {
array_push($stk,array('what'=>SERVICES_JSON_IN_OBJ,'where'=>$c,'delim'=>false));
}elseif (($chrs{$c}== '}') &&($top['what'] == SERVICES_JSON_IN_OBJ)) {
array_pop($stk);
}elseif (($substr_chrs_c_2 == '/*') &&
in_array($top['what'],array(SERVICES_JSON_SLICE,SERVICES_JSON_IN_ARR,SERVICES_JSON_IN_OBJ))) {
array_push($stk,array('what'=>SERVICES_JSON_IN_CMT,'where'=>$c,'delim'=>false));
$c++;
}elseif (($substr_chrs_c_2 == '*/') &&($top['what'] == SERVICES_JSON_IN_CMT)) {
array_pop($stk);
$c++;
for ($i = $top['where'];$i <= $c;++$i)
$chrs = substr_replace($chrs,' ',$i,1);
}
}
if (reset($stk) == SERVICES_JSON_IN_ARR) {
return $arr;
}elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
return $obj;
}
}
}
}
function isError($data,$code = null)
{
if (class_exists('pear')) {
return PEAR::isError($data,$code);
}elseif (is_object($data) &&(get_class($data) == 'services_json_error'||
is_subclass_of($data,'services_json_error'))) {
return true;
}
return false;
}
}
if (class_exists('PEAR_Error')) {
class Services_JSON_Error extends PEAR_Error
{
function Services_JSON_Error($message = 'unknown error',$code = null,
$me = null,$options = null,$userinfo = null)
{
parent::PEAR_Error($message,$code,$me,$options,$userinfo);
}
}
}else {
class Services_JSON_Error
{
function Services_JSON_Error($message = 'unknown error',$code = null,
$me = null,$options = null,$userinfo = null)
{
}
}
}

?>